Historic Earthquakes

Mammoth Lakes, California
1980 May 27 14:50 UTC
Magnitude 6.0

It was difficult to differentiate
the effects of this earthquake from those
caused by the shocks on May 25. It was felt over
a similar area, however, and four people were
injured. Minor damage was reported in several
towns in the area. Landslides and falling rocks were
common in Yosemite National Park. Old U.S.
Highway 395, east of Mammoth Lakes, was closed
because of severe cracks. Felt from Eureka and Las
Vegas, Nevada, in the east to La Honda (San Mateo
County) and Los Angeles on the coast. Many aftershocks
were felt in the Mammoth Lakes area.

Abridged from
Seismicity of the United States, 1568-1989 (Revised),
by Carl W. Stover and Jerry L. Coffman,
U.S. Geological Survey Professional Paper 1527,
United States Government Printing Office, Washington: 1993.